As the concrete cures it generally shrinks.
Tile expansion joint detail.
Architectural resources and product information for floor to floor expansion joints including cad drawings specs bim 3d models brochures and more free to download.
An expansion joint is in the substrate for instance in concrete.
It is best to achieve a two sided bond only to the flanks of the open joint in the tile.
Schluter systems prefabricated movement joint profiles protect tile edges and prevent sound bridges and surface water penetration resulting in a permanent maintenance free installation.
A movement joint is in the tile only.
Expansion joints are created in the concrete to compensate for excessive expansion due primarily to temperature changes in the concrete.
Recognizing that tile is a facade movement joints are needed to eliminate stresses that can occur between the substrate and the tile due to differing amounts of expansion and contraction.
The sealant used in expansion joints should achieve a minimum shore a hardness of 35.
Movement joints are an integral part of any tile assembly and must be incorporated within the tile field at doorsills and at transitions to walls and other restraining structures to allow movement of the assembly and prevent stresses that can damage the system.
It allows for movement in the tile.
The tcna handbook recommends allowing for expansion and contraction in every tile installation.
Where should movement joints be placed.
Latasil or urethane sealant placed over a closed cell foam backer rod.
It s quite common to see controlled breaks in concrete and those are usually expansion joints.